Fixed compiler warning (check SM forums for details), fixed compiler crash, seemed to be caused by the string parameter not being defaulted to an empty string, using new String:... had no effect, so I went through and defaulted all String parameters to (not uncluding constant expressions).

src/zr/weapons/restrict.inc

@@ -827,7 +827,7 @@ RestrictCreateGroupWeaponsArray(&Handle:arrayGroupWeapons, const String:weapongr
  * @param maxlen        Maximum length of the weapon list, the rest is truncated.
  * @param separator     Separator character between weapon names. 
  */
-RestrictGetGroupWeapons(const String:groupname[], String:weaponlist[], maxlen, const String:separator[])
+RestrictGetGroupWeapons(const String:groupname[], String:weaponlist[] = "", maxlen, const String:separator[])
 {
     KvRewind(kvWeaponGroups);
     KvJumpToKey(kvWeaponGroups, groupname);

src/zr/weapons/weapons.inc

@@ -218,7 +218,7 @@ bool:WeaponsIsValidWeapon(const String:weapon[])
  * @param weapon    The weapon name.
  * @param display   Returns with the display name, is not changed if weapon is invalid. 
  */
-WeaponGetDisplayName(const String:weapon[], String:display[])
+WeaponGetDisplayName(const String:weapon[], String:display[] = "")
 {
     // Reset keyvalue's traversal stack.
     KvRewind(kvWeapons);